Dual-supply automotive electrical system with protection of motion control components
US11171481B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2020 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Nov 23, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/202
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An automotive electrical system provides power from two DC sources each connected to a separate group of integrity-protected (ASIL) loads. A third group of non-ASIL loads are connected to both power sources through a controllable isolator with first and second transistor arrays. The connection through the isolator also connects each ASIL group to the other DC source. A control circuit includes a plurality of drivers for driving the first and second transistor arrays into conduction. The control circuit is configured to cease driving at least a respective one of the first and second transistor arrays when a fault condition is detected in which current flow in at least one of the transistor arrays exceeds a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.